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DISCONTINUED OPERATIONS - Schedule of Discontinued Operations of the MST Franchise (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | (Loss) income from discontinued operations, net of income taxes |
Discontinued Operations, Disposed of by Sale | MST Franchise |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Cost of goods sold | $ 0 | $ 0 | $ 0 | $ 80
Research and development | 0 | 0 | 0 | 0
Selling, general and administrative | 15 |  | 46 | 25
Total operating expenses | 15 | 117 | 46 | 25
(Loss) income from discontinued operations | (513) | (117) | (544) | 1
Gain on the sale of the MST Franchise | 0 | (87) | 0 | 12,918
(Loss) income from discontinued operations, before income taxes | (513) | (204) | (544) | 12,919
Income tax expense | 0 | 0 | 0 | 0
Net (loss) income from discontinued operations | (513) | (204) | (544) | 12,919
Discontinued Operations, Disposed of by Sale, Netting | MST Franchise |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Selling, general and administrative |  | 117 |  |
Product sales, net | Discontinued Operations, Disposed of by Sale | MST Franchise |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Total revenues | $ (498) | $ 0 | $ (498) | $ 106

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